116769423360domain: NAppears in sequencesa(n) = n*(n+1)*2^(n-2).at n=29A001788Denominator of Bernoulli(2n,1/2).at n=14A033469Denominator of Bernoulli(n, 1/2).at n=28A157780Denominator of Bernoulli(n, -1/2).at n=28A157782a(n) = denominator(b_n(x)), where b_n(x) are the polynomials defined in A335947.at n=28A335949